What are my options regarding a doctor being very rude?

Here is my story and bear with me. it is somewhat long. I have had ankle problems for almost 17 years now. Two failed surgeries, 8 cortisone shots, 5 rounds of physical therapy, 6 months of minimal weight bearing, 4 pair of orthodics, many NSAID prescriptions later and I am still having a lot of trouble. Things were going well until 4 months after my second surgery. My ankle pain returned with a vengeance. This was in early May, 2011. My second surgery was done in January. I have been referred to a pain clinic, but cannot get an appointment for another month. My general doctor is also on maternity leave for another 6 months. I have had multiple pain medication prescriptions filled, but they were only filled by one doctor. I also only take these medications if I must, like at night when I am in immense pain. Today, I scheduled an appointment with a physicians assistant. She was the only one available for a few days. She did not even look at my chart and accused me of being a drug addict when I am by no means an addict. She was very rude and was making me out to be the problem when all I came in for was legitimate moderate to severe left ankle pain. She dismissed me off as a "pill seeker." I thought to be an addict you need to have physical and mental addiction to these medications. I do not at all. I am a legitimate, hard working mother who unfortunately has to wait until July to see a pain specialist, and then this fall, I need to have an OATS procedure done. Between now and that point, I am unsure. All I want to know is, what can be done besides calling the administrative office at the clinic? Would I have a legal case due to her malpractice? She dismissed my pain and did not examine me, or look at my chart. Thank you all very much and God bless.